Photoexcitation Energy Transfer Patterning of 2D Materials with DNA Origami.

Hybrid architectures that combine atomically thin semiconductors, such as transition metal dichalcogenides (TMDs), with molecular systems provide a powerful platform for engineering optical properties and controlling photoexcitations. In this work, Förster resonance energy transfer is realized between 2D and molecular excitons. Well-defined hybrid structures are fabricated using lithographic methods together with DNA origami self-assembly, which enables the precise positioning of fluorescent dyes under TMD monolayers. By selecting specific dye molecules, spatial modulation of MoS2 photoluminescence is achieved, with either enhancement or quenching. Beyond demonstrating controlled energy transfer at the molecular scale, this approach establishes a robust framework for engineering excitonic interactions and offers opportunities for programmable design of nanophotonic and nanoelectronic devices based on 2D materials and their van der Waals heterostructures.